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Étude et conception d'un système IR-UWB dédié aux communications sans fils haut débit

Abstract : The main objective of this thesis is to implement new UWB coding techniques in order to increase the data rate flow and to enhance the robustness ensured by UWB communication for multimedia and transports applications (vehicle –Infrastructure communication). The UWB is an emerging and promising technology largely undeveloped for this type of applications. In this work, we develop high speed wireless communication system based on IR-UWB technique. M-QAM modulations are not adapted for IR-UWB systems. New modulations called « M-OAM » are proposed in this work and proved to be more adapted and more efficient. For this scope, different modulations and UWB waveforms are studied and compared in term of adequacy to our application and receiver performances. Different signal processing algorithms have been proposed and tested for each coding technique. The multi-users features are treated, for minimizing interferences and desynchronization. After the simulation stage, prototype of our system has been implemented in order to test and evaluate the obtained performances according to the used waveforms and proposed modulations, in real conditions. Finally, real time processing unit has been carried out on an FPGA platform that offers computing time at 3GHz by using parallelizable algorithms on reconfigurable architectures.
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https://hal-uphf.archives-ouvertes.fr/tel-03416574
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  • HAL Id : tel-03416574, version 1

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Amel El Abed. Étude et conception d'un système IR-UWB dédié aux communications sans fils haut débit. Electronique. Université de Valenciennes et du Hainaut-Cambrésis, 2011. Français. ⟨NNT : 2012VALE0004⟩. ⟨tel-03416574⟩

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